Alfred berney



(No Model.)

' -A-. BERNEY.

Furnace.

No. 239,307; Patented March 29,1881

' INVENTDFL WITNESSES:

N-PETERS, FNOTO-UTHOGRAPHEIL WASHINGTON, D Q

UNITED STATES PATENT OFFICE.

ALFRED BERNEY, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO NATHIEL A.

DUTTON, OF SAME PLACE.

F U R N AC E.

SPECIFICATION formingpart of Letters Patent No. 239,307, dated March 29,1881. Application filed September 28, 1880 (No model.)

To all whom it may concern ted lines in Fig. II. The coal or fuel is fedupon Be it known that I, ALFRED BERNEY, a citiwater-bars O D, and, bythe fire from thelower zen of the United States, residing at Boston, inthe county of Suffolk and State of Massa- 5 chusetts, have inventedcertain new and useful Improvements in Furnaces and I do here by declarethe following to be afull, clear, and exact description of theinvention, such as will enable others skilled in the art to which itapl0 pertains to make and use the same, reference being had to theaccompanying drawings, and to letters or figures of reference markedthereon, which form a part of this specification.

My invention relates to improvements in furnaces; and the object is tocoke the coal and produce better combustion of the fuel than has beendone heretofore to my knowledge.

The invention consists in arranging above the ordinary grate-bars two ormore tiers or shelves or water-bars, upon which the fuel is to be fedand coked, and finally dumped onto the lower grate-bars to be consumed,all of which will be more fully described herein- 2 after, referencebeing had to the accom panying drawings, in which- Figure I is avertical cross-section of a furnace having my improvement attached, online to ac. Fig. II is a longitudinal section of 0 the same on line y y.

In the drawings, A represents the furnace of a locomotive, portable,stationary, or other boiler, havingin its lower part the ordinary grate,B. A short distance above the grate B 3 5 are arranged, on each side ofthe t'urnace, two or more tiers or shelves, G D, cntnposed of tubular orwater bars, extending from the front to the rear water-spaces, so thatthe water can freely circulate through them, and they are 40 thereforeslightly inclined, as shown by the dotor ordinary bars, ignited andcoke-d. After the coal or fuel has been thoroughly coked, in whichcondition it also assists in burning the 5 gases and products ofcombustion from the lower grate, it is dump'ed onto said lower grate,and finally consumed thereon. It will thus be seen that a much betterresult of combustion of the fuel can be obtained, while at the same 0time thewater is heated in the water-bars and a better generation ofsteam is produced.

I am aware that watenbars in tiers have been used in boilers extending,however, from side to side of the furnace, and also in con- 5 nectionwith ordinary grate-bars; but in such cases a separate door is used tointroduce the coal or fuel upon the tiers of bars, while with myconstruction only one door is required, and the coked fuel can be easilydumped upon the ordinarygrate from the tiers or shelves.

I therefore do not broadly claim a series of tiers of water-bars; but,

Having thus described my invention, what I claim, and desire to secureby Letters Patcut, is

1. In a furnace, two or more tiers or shelves of water-bars arrangedover the ordinary grate-bars, substantially as specified.

2. In a furnace, the combination of two or more tiers or shelves,composed of a series of water-bars, with the ordinary grate, allarranged substantially as shown and herein described.

In testimony whereof I affix my signature in presence of two witnesses.

ALFRED BERNEY. Witnesses:

W. F. HELLEN, AUG. A. NIcHoLsoN.

